Mustang guys, T-stat??

[michaelmosty]

Will the Mustang guys give their thermostat information?
Are you running one, if so what temp t-stat.
Water temps and oil temps at full temperature?

Me, 180 t-stat, running 215 water and 280 oil during race. (W/ big ass radiator and big ass oil cooler)

BTW, I am thinking about running with no t-stat this weekend. Suggestions?

[donovan]

I ran a 180 with water temps around 225-230 on track... I switched to a 190 and now the temps are around 210-215 on track.

Depending on the car setup, if you run without a stat you might run hotter as the water will not stay in the radiator long enough to cool, causing it to run hotter.

Runing a cooler stat is not always the answer. Keeping the water in the radiator long enough to cool it down and then cycle out is the key... to long in the radiator and the engine gets too hot, causing a hot cold situation... running a 160 will cause it to stay open and not cool enough and it cycles to fast...

I found the 190 to be suited well for my car. I have run the 180, 190, 195, and 205 in my car.

DD

[BSharp]

Since your car is EFI I would run a tstat because you need it in closed loop. As you it does not matter what temp stat you have is it cannot get that low anyway. You need as much water flow as you can get. This style stat flow more than the regualar style. Though 215 is not that bad. Many new cars run that hot everyday.
http://www.oreillyauto.com/EW3/Produ...&currentPage=0

[BSharp]

David, if you have a water temp of 200, wouldn't both a 180 and 190 stat be full open? Here is some tech I found.
http://www.stewartcomponents.com/tec...ech_Tips_3.htm
http://forums.corner-carvers.com/sho...ater+pump+flow

[donovan]

In theory... Yes, they both would both be open...

I played around with it on separate weekends, and the ambient temps were different, it was not the best case study...

When I looked into it back in 2005 it was explained that the cooling capacity of the radiator should be matched with the temp and thermostat cycle.

Being that if the radiator could only cool down to X degrees, and the cycle of the temp/stat was X degrees, there is a relationship between the two that need to be matched.

So, if my setup would not produce X degrees of desired temps, then switch the stats and see if that helps. If the desired temps are not reached with that cycle of the stat, then get a larger radiator because the engine is going to produce the same heat not matter what.

Now, if the stat is open steady... say like during a 20 minute session on track... then its all just getting the water to flow and cool...

Not sure if I am explaining it correctly or if it’s clear. The main key was that if the water was not in the radiator for X amount of time to cool it, the engine temp/stat would open and high temps would result.

I realize that this theory is mainly directed for street use, as our sessions may not cycle like this.

I’m really not this smart, I’m fairly dumb when it comes to all this… I just read a lot! So, if I'm way off here please help!


DD 8)

[BSharp]

Not sure if I am explaining it correctly or if it’s clear. The main key was that if the water was not in the radiator for X amount of time to cool it, the engine temp/stat would open and high temps would result.DD 8)

But if the water is not spending enough time in the rad it IS spending too much time in the engine. Sounds like either a water flow (too little) or and air flow (too little) issue.

[donovan]

With my limited understanding, Agreed!

I appriciate you chiming in and adding some Tech here!

Much to learn here.
DD

[marshall_mosty]

Good thread on cc.com

http://www.corner-carvers.com/forums...+heat+transfer

[BSharp]

Good thread on cc.com

http://www.corner-carvers.com/forums...+heat+transfer

Interthread Klink...

David, if you have a water temp of 200, wouldn't both a 180 and 190 stat be full open? Here is some tech I found.
http://www.stewartcomponents.com/tec...ech_Tips_3.htm
http://forums.corner-carvers.com/sho...ater+pump+flow

[donovan]

I read thru some of those links, good stuff...

Something I left off... I run the Edelbrock water pump and a Fluiddyne 24# radiator cap with a fluiddyne radiator.

DD